Plow-anvil.



N0. 858,514. PATENTED JULY 2, 1907.

J. F. RUFF. PLOW ANVIL- APPLICATION FILED HAB- 29, 1907.

wzlkness'es. Inventor.

- JOHN F. HUFF, OF OERRO GORDO, ILLINOIS.

PLOW-ANVIL.

Specification of Letters Patent.

Patented July 2, 190?.

Application filed March 29, 1907. Serial No. 365,430.

To all whom it mag concern:

Be it known that 1, JOHN F. HUFF, a citizen of the United States, and a resident of Cerro Gordo, in the county of Piatt and State of Illinois, have invented certain new and useful Improvements in Plow-Anvils; and my preferred manner of carrying out the invention is set forth in the following full, clear, and exact description, terminating with claims particularly specifying the novelty.

This invention relates to tools for metal working, and more especially to vises; and the object of the same is to produce a combined vise and anvil on which a plow can be held and sharpened.

To this end the invention consists broadly in the construction of parts as claimed below and in the use of jaw attachments which adapt the anvil to plow shares of different shapes.

In the accompanying drawings Figures 1 and 2 are respectively a plan and a side elevation of this vise with its jaws open. Fig. 3 is a plan view showing the clamping jaw closed upon a plow share which latter is in position for work. Fig. 4 is a rear elevation. Fig. 5 is a perspective detail of the jaw attachment.

Rising straight from a base 1 is'the fixed member. 2 of the vise, which member is preferably of considerable size and weight because it is to serve as an anvil upon which pounding is to be done. At its upper end it has a working face 3 which is given a curvature toapproximate the dished side of all plow shares, and at the upper extremity of this face it has projecting ears 4 upon one of which the tip of a right hand or a left hand plow share may rest. In said face are holes 5 into which may be fitted pins 6 at the extremities of a jaw attachment 7. It is intended that there shall be several of these attachments of different shapes, according to the requirements of the different standard makes of plow shares, so that whatever type of the latter is to be worked upon there is a corresponding jaw attachment which can be applied to the anvil to cause it to fit the dished side of the share. The other member 12 of the vise has a clamping jaw or face 13 atv the proper point and of the proper shape to press upon the curved or outer side of the plow share when it is borne toward the anvil member. These members are connected by ears 14 projecting from one of them and a pivot pin 15 taking through the ears and the other member, and an expansive spring 19 above the pivot is preferably employed to throw the jaws of the vise normally open. Any suitable means may be employed for overcoming the force of this spring to close the jaws, and as probably the most serviceable I have shown a treadle 16 pivoted at 17 in the anvil member and with its inner end deflected and having a cam face 18 adapted to press the lower end of the clamping member to the rear and when so pressed adapted to I retain its position. In order to effect this, the cam 18 projects at a slight angle to the length of the treadlebody 16.

In the use of this device the shape of the dished side mines the selection of a jaw attachment 7 having a corresponding shape, and such attachment is applied to the anvil by fitting its pins 6 into the holes 5. The share is then heated and placed upon the anvil and over the attachment, after which the treadle is depressed so that the jaw 13 of the member 12 is forced toward the working face 3 of the anvil and borne against the back of the share. With a share of the standard shape and thickness, when it is clamped tightly in place bythe jaw 13 the cam 18 will project horizontally from the pivot 17 and will hold the vise closed. The share is sharpened while hot by the use of a hammer, the face 3 and proper ear 4 of the member 2 being employed as an anvil, for which reason they will preferably be of steel. If one heating of the share is not sufficient, a second and possibly a third may be given it, but I find two heatings usually enough. As the blows of the hammer will be directed mostly downward, the body of the anvil member 2 is by preference made rather thick and rises vertically from the base.

What is claimed as new is:

1. A tool of the type described, comprising a base, an anvil rising vertically therefrom and having a curved working face at its upper end and projecting ears at the ends of said face, the latter having holes, and a removable jaw attachment having pins adapted to fit into said holes combined with means for holding the work upon said face and over said attachment.

2. A tool of the type described, comprising a base, an anvil rising vertically therefrom and having a curved working face at its upper end and projecting ears at the ends of said face, the latter having holes, and a removable jaw attachment having pins adapted to fit into said holes; combined with a clamping member movably connected with said anvil and having a jaw adapted to hold the work uponsaid face and over said attachment, and means for setting said movable member. 1

3. A tool of the type described, comprising a base, an anvil rising vertically therefrom and having a curved: working face at its upper end and projecting ears at the ends of said face, the latter having holes, and a removable jaw attachment having pins adapted to fit into said holes; combined with a clamping member having a jaw adapted to engage the work when the latter rests upon the face of the anvil, a pivotal connection between this member and the anvil intermediate their length, and a treadle pivoted to the anvil and having a deflected cam face engaging the lower end of the clamping member.

In testimony whereof I have subscribed my signature hereunto, this twenty third day of March, A. D. 1907.

JOHN 'F. HUFF.

Witnesses EARL Gnrswonn, JOHN W. VENT.

of the plow share 100 which is to be sharpened deter- 

